Integrating Site Conditions with Design Requirements to Standardize Installation Height. According to standards, the height from the bottom edge of a distribution box to the floor is generally 1. Let's go through what matters most. However, this height can be adjusted. to install, or they will be brought along on the day. The body of the boxes shall have sufficient re- enforcement with suitable size of channels keeping a provision for fixin andle conforming to general. An outdoor electrical distribution box serves as the critical junction point where incoming power lines are split into multiple branch circuits for outdoor installations, parking lots, building exteriors, and industrial facilities.